Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach thu, xach tay
sach tu » sach thu, cach tu, sach uu
hieu va » lieu va, hieu qua
va nam » van nam, ha nam, va nay
tu cua » hu cua, vu cua
dan va » doan va, dan ca, ban va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sach tu)) nang xa hoi. hieu va nam ((tu cac) or (tu cua)) dan va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach tu)) nang xa hoi. hieu va nam ((tu cac) OR (tu cua)) dan va su triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach tu)) nang xa hoi. hieu va nam ((tu cac) or (tu cua)) dan va su triet*.